Authorities identified Tuesday a man and woman arrested after a six-hour standoff with police that was sparked by gunshots the couple allegedly fired into a neighboring building.

Anna Tostanoski, 25, of San Francisco, and her boyfriend, Joseph Camilleri, 29, were arrested Monday outside of his house in the first block of West Market Street about 11 a.m., said Daly City police Sgt. Dave Mackriss.

It’s still not clear why the couple began shooting at the wall of a business across the street from Camilleri’s home. Mackriss said it was a “random” act, and alcohol might have been a factor.

Police initially thought the incident was caused by a domestic dispute, but said Tuesday they don’t believe that is the case.

The trouble started when officers investigating a nearby burglar alarm call heard gunshots. The police went to check out the noise and found Tostanoski and Camilleri, who ran into the house.

When the couple refused to come out, police called in a negotiator and the SWAT team.

The couple surrendered as police were getting ready to force their way into the home.

A search of the house turned up 10 rifles and 10 pistols, some of which were illegal.

Tostanoski and Camilleri were booked into the San Mateo County jail, and they are facing numerous charges, including shooting at an inhabited dwelling and possessing unlicensed firearms.

More in News

SAN JOSE -- Grenades were discovered at an estate sale Monday, prompting the evacuation of about 10 homes near the San Jose Country Club, according to the Santa Clara County Sheriff's Office. Deputies were called to the 300 block of Gordon Avenue, near Greenside Drive, about 4:10 p.m., said Sgt. Rich Glennon. Get breaking news with our free mobile app....